diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java
index 15293f4d539..2d1e3c46537 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java
@@ -180,6 +180,7 @@ public class CrystalClientCodegen extends DefaultCodegen {
         typeMapping.put("set", "Set");
         typeMapping.put("map", "Hash");
         typeMapping.put("object", "Object");
+        typeMapping.put("AnyType", "Object");
         typeMapping.put("file", "::File");
         typeMapping.put("binary", "String");
         typeMapping.put("ByteArray", "String");